diff --git a/vis/index.d.ts b/vis/index.d.ts
index 92b6ea6a08..3ee00ba03a 100644
--- a/vis/index.d.ts
+++ b/vis/index.d.ts
@@ -1497,6 +1497,7 @@ export interface Data {
 }
 
 export interface Node {
+  group?: string;
   id?: IdType;
   label?: string;
   x?: number;